Hello there @SilenSang!
Checking through the community, a very similar scenario to yours was tackled and resolved with the following methods:
-
Increase landscape size, then re-apply on water body actor
-
Switching between available options from the ‘Water Waves Asset Reference’ dropdown menu
-
Adjust the tile size on the water zone (the sample was 2400, then changed to 1200)
You can find additional details here:
Additionaly, I would recommend checking the following tutorial for ocean simulation: